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The illustrations below are a guide to help identify entrapment areas for swing gate installations that
must be protected. Other entrapment areas may exist and must be identied by the installer and
protected by the appropriate entrapment protection device for the situation.
Zone A
- Leading edge of gate where it meets a 2nd gate,
stop post or passes a column or post corner. -
recommended monitored entrapment protection
type is B2 contact sensor or equivalent.
Zone B - Gate opens toward an immoveable object with
less than 16 inches (40.6 cm) of clearance -
recommended monitored entrapment protection
type B1 photo eye or equivalent. If space is less
than 16” (40.6 cm), entrapment protection in this
area is required.
(ASTM F2200: 7.1.1.1 and 7.1.1.2)
Zone C - If distance from center of hinge rotation point to
corner of column, post or immovable object is
greater than 4 inches (10.16 cm), recommended
monitored entrapment protection type is B2 contact
sensor or equivalent.
Zone D - If the bottom edge of a swing gate is greater than
4 inches (10.16 cm) and less than 16 inches
(40.6.cm) above the ground at any point in its arc of
travel, one or more contact sensors must be located
on the bottom edge of the gate.
ENTRAPMENT ZONES
< 4”
> 4” and < 16”